Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e629f47294b6a23…

MALICIOUS

PDF

68.2 KB Created: 2021-04-01 22:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 142e3f2637a3285f93b6dcb71bdd61dc SHA-1: 9d0b6f2cb904a56251ce70067dc4eba5eba9f769 SHA-256: 6e629f47294b6a23765413df65adfcd1b9e50f7a96a5a5545500efba99e1bdf1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/aws?utm_term=christian+song+jesus+be+the+center+of+my+life PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461481/normal_600a3c1bdd676.pdfIn PDF document text
    • http://jugepawe.medianewsonline.com/what_makes_hair_grow_scientifically.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/jhihrja/vamuje.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/bhagavad_gita_para_todos_jack_hawley.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/hfifjd1/2020_my_country_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/aiaPlow/canadian_ice_hockey_quiz_questions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5fe2c09a9f12d.pdfIn PDF document text
    • https://cdn.sqhk.co/govupasuti/icRPSew/azshara_quick_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/Z260vcj/pameje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_5fd7d3232a682.pdfIn PDF document text
    • http://nezowigivomi.scienceontheweb.net/2020_audi_q7_owners_manual_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390330/normal_5fedb89e64210.pdfIn PDF document text
    • http://lilozekakotelup.sportsontheweb.net/html_to_angular_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/latufenaw/toxicology_report.pdfIn PDF document text
    • http://saluwagasa.onlinewebshop.net/wupinovijezidikudoduded.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/pujajamurefota.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/vujafedowanezoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bd3465e-25a7-4190-b905-d7f294bce82d/65771971632.pdfIn PDF document text
    • http://dojorunubi.myartsonline.com/rikofig.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/rudodiveduk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb4963f-9ef3-4e95-b81b-aa4db33e7514/zagg_folio_ipad_mini_4_keyboard_case.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/xogiwilimonugeziriliso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4d4480-30ce-4dab-8fbb-8d27064e6f1c/sizopapelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d932bd-ae4c-4c30-b512-ee83c90868e8/maytag_bravos_quiet_series_300_gas_dryer_troubleshooting.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD147 5516 bytes
SHA-256: 6fa0c92feb17a516a4e33711261d53ed6c70f9b4c1f7ca510b61d7252ace903a
font_01_sfnt_off0000e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EA 9012 bytes
SHA-256: bd28725bab717a056eeb497d72b2bb62d282f6a813bd2ba52fbc9f04d7d146c7

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